At 11:15 AM 6/26/02 -0500, Pic Dude wrote: > > ... But they start up MUCH quicker than crystals. ... > >Hmmm.... if it behaves like a crystal (sounds perfectly >reasonable), then I assume that the PIC will still wait >1024 cycles before executing any instructions, so I >should not have a problem with ICSP...? Yep - that 1024 cycle delay is a hardware selection that is made when you enable XT or HS modes. Upon reading some of your posts made after I wrote my reply to you, I now see what your real question was: is there a problem using 2 pin resonators rather than 3 pin resonators. My answer: no problem that I am aware of. The real advantage of the 3 pin resonators is that you get the built-in caps almost for free - the cost difference between a 2 pin and a 3 pin resonator is small. There may actually be an advantage to using 2 pin resonators at high frequency - you can tailor the caps to match what the PIC internal oscillator wants to see rather than what the resonator manufacturer thinks you need. This may improve operation at high frequencies. dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 18 years of Engineering Innovation (1984 - 2002) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads